TWI412828B - Display panel - Google Patents

Abstract

A display panel including a first substrate, a second substrate opposite to the first substrate and a display medium between the first substrate and the second substrate is provided. The first substrate has a scan line, a data line and an active device electrically connected to the scan line and the data line. The second substrate has a common electrode layer, an insulting layer covering the common electrode layer, a pixel electrode on the insulating layer and a contact structure on the insulating layer. More specifically, the contact structure is electrically connected to the pixel structure and electrically connected to the active device on the first substrate.

Description

Display panel

The present invention relates to a display panel, and more particularly to a liquid crystal display panel.

Currently, the market for thin film transistor liquid crystal displays (TFT-LCDs) is oriented toward high contrast ratio, gray scale inversion, high brightness, high color saturation, and fast response. (response) and a wide viewing angle (viewing angle) and other directions. Commonly used wide viewing angle technologies include: twisted nematic liquid crystal (TN) plus wide viewing film, In-Plane Switching (IPS) liquid crystal display, and marginal field switching (Fringe Field Switching) , FFS) liquid crystal display and Multi-domain Vertical Alignment (MVA) liquid crystal display.

The IPS liquid crystal display and the FFS liquid crystal display are generally composed of an active array substrate, a color filter substrate disposed on the active array substrate, and a liquid crystal layer disposed between the active array substrate and the color filter substrate. The active array substrate is formed by an active array disposed on an inner surface of the first substrate (also referred to as a first substrate), and the active array includes a plurality of pixel electrodes and a common electrode. The color filter substrate is formed by a color filter pattern disposed on the inner surface of the second substrate (also referred to as a second substrate). Because when the user's finger touches the display panel, the electric field inside the display panel changes and the display quality is affected. Therefore, color filtering is required. A light-transmissive conductive layer (also referred to as an additional light-transmitting conductive layer) is additionally formed on the outer surface of the light substrate. That is, a light-transmissive conductive layer is additionally formed on the outer surface of the second substrate, and the surface is different from the color filter pattern on the inner surface of the second substrate to prevent the display panel from being touched by the finger. The internal electric field changes to affect the display quality. However, this light-transmitting conductive layer tends to lower the transmittance of the display panel.

The present invention provides a display panel which can eliminate the need to separately provide a light-transmitting conductive layer on the outer surface of the color filter substrate, thereby avoiding a decrease in the transmittance of the display panel.

The present invention provides a display panel including a first substrate, a second substrate opposite the first substrate, and a display medium between the first substrate and the second substrate. The first substrate includes an active component provided with a scan line, a data line, and an electrical connection with the scan line and the data line. The second substrate includes a common electrode layer, an insulating layer covering the common electrode layer, a pixel electrode on the insulating layer, and a contact structure on the insulating layer, wherein the contact structure is electrically connected to the pixel electrode and is located at the The active components on a substrate are electrically connected.

The present invention provides a display panel including a first substrate, a second substrate opposite the first substrate, and a display medium between the first substrate and the second substrate. The first substrate includes an active component provided with a scan line, a data line, and an electrical connection with the scan line and the data line. The second substrate includes a pixel electrode, is electrically connected to the pixel electrode, and is located on the first substrate A contact structure electrically connected to the active device and a common electrode interleaved with the pixel electrodes.

Based on the above, the present invention sets the pixel electrode and the common electrode layer (common electrode) in the display panel on the second substrate. Therefore, when the finger touches the display panel (ie, the second substrate), the electric field inside the display panel is not changed. Therefore, the present invention does not need to additionally form a light-transmitting conductive layer on the outer surface of the second substrate, so that the decrease in the transmittance of the display panel can be avoided.

The above described features and advantages of the present invention will be more apparent from the following description.

1 is a schematic cross-sectional view of a display panel in accordance with an embodiment of the present invention. 2A is a top view of the first substrate of the display panel shown in FIG. 1. 2B is a top view of the second substrate of the display panel shown in FIG. 1. Referring to FIG. 1 , FIG. 2A and FIG. 2B , the display panel of the present embodiment includes a first substrate 100 , a second substrate 130 , and a display medium 150 . The display medium 130 is between the first substrate 100 and the second substrate 130 . It may include liquid crystal molecules, electrophoretic display media, or other suitable media. The display medium in the following embodiments of the present invention is exemplified by liquid crystal molecules, but is not limited thereto. Further, the liquid crystal molecules in the following embodiments of the present invention are preferably exemplified by liquid crystal molecules which can be rotated or switched by a horizontal electric field or liquid crystal molecules which can be rotated or switched by a lateral electric field, but are not limited thereto.

It is to be noted that, in order to clearly illustrate the present invention, FIG. 2A and FIG. 2B only illustrate one of the pixel structures in the display panel as an example. this It should be understood by those skilled in the art that the display panel is composed of a plurality of arrayed pixel structures (also referred to as pixel arrays). In other words, the pixel array structure on the first substrate of the display panel is, for example, as shown in Fig. 10A, which is composed of a plurality of pixel structures as shown in Fig. 2A. The pixel array structure on the second substrate of the display panel is, for example, as shown in Fig. 10B, which is composed of a plurality of pixel structures as shown in Fig. 2B. The description of FIG. 2A and FIG. 2B is mainly described in detail with a single pixel structure. However, the display panel claimed in the present invention can be understood by referring to FIG. 10A and FIG. 10B at the same time.

The first substrate 100 includes a substrate 101, a scanning line SL, a data line DL, and an active device T. The material of the substrate 101 (also referred to as the first substrate) may be glass, quartz, organic polymer, or an opaque/reflective material (eg, conductive material, wafer, ceramic, or other applicable material). ) or other applicable materials.

The scan line SL and the data line DL are disposed on the substrate 101, and the scan line SL and the data line DL are alternately arranged with each other. In other words, the extending direction of the data line DL is not parallel to the extending direction of the scanning line SL. Preferably, the extending direction of the data line DL is perpendicular to the extending direction of the scanning line SL. In addition, the scan line SL and the data line DL belong to different film layers. Based on the conductivity considerations, the scan line SL and the data line DL are generally made of a metal material. However, the present invention is not limited thereto. According to other embodiments, other conductive materials may be used for the scan line SL and the data line DL (for example, an alloy, a nitride of a metal material, an oxide of a metal material, an oxynitride of a metal material, Or other suitable material), or a stacked layer of metal material and other conductive materials.

The active device T is, for example, a bottom gate type thin film transistor including a gate G, a channel C, a source S, and a drain D. The gate G is electrically connected to the scan line SL. Channel C is located above gate G. In addition, the gate and the channel C further include an insulating layer 102, which may also be referred to as a gate insulating layer. The source S and the drain D are located above the channel C, and the source S is electrically connected to the data line DL. Furthermore, the active element T is further covered with a protective layer 104. According to another embodiment, the active device T can also be a top gate type thin film transistor, that is, the gate G is located above the channel C.

According to the embodiment, a conductive layer 106a may be further disposed on the protective layer 104 above the active device T and a conductive layer 106b may be further disposed in the protective layer 104. The material of the conductive layers 106a and 106b is, for example, a metal or a metal oxide. The conductive layer 106a covering the active device T can shield the photoelectric effect generated by the active device T during operation. The conductive layer 106b is located in the protective layer 104 to be electrically connected to the drain D of the active device T. Moreover, the conductive layer 106b can be selectively electrically connected to the conductive layer 106a. In the present embodiment, the conductive layer 106b is not electrically connected to the conductive layer 106a as an example, but is not limited thereto. In the present invention, the conductive layers 106a, 106b are not essential components, so fabrication of the conductive layers 106a, 106b may be omitted in other embodiments.

The second substrate 130 is disposed opposite to the first substrate 100 and includes a substrate (also referred to as a second substrate) 110 , a common electrode layer 116 , an insulating layer 118 , a pixel electrode 120 , and a contact structure 124 . The material of the substrate 110 may be glass, quartz, an organic polymer, or other suitable material.

According to an embodiment of the invention, the second substrate 130 includes more colors The color filter pattern 112a, the light shielding pattern 112b, and the flat layer 114. The color filter pattern 112a and the light shielding pattern 112b are disposed on the substrate 110 to constitute a color filter array. For a pixel structure, the color filter pattern 112a may be any of three colors of red, green, and blue. The light shielding pattern 112b may be a metal material or a black resin material, which may also be referred to as a black matrix. The flat layer 114 covers the color filter pattern 112a and the light blocking pattern 112b. Preferably, the flat layer 114 is an unpatterned film layer, but is not limited thereto. Wherein, the material of the flat layer 114 comprises an inorganic material (for example: cerium oxide, cerium nitride, cerium oxynitride, other suitable materials, or a stacked layer of at least two materials mentioned above), an organic material (for example: polyester (PET) ), polyenes, polypropylenes, polycarbonates, polyalkylene oxides, polyphenylenes, polyethers, polyketones, polyalcohols, polyaldehydes, or other suitable materials, or Combination), or other suitable material, or a combination of the above.

The common electrode layer 116 is disposed on the flat layer 114. The common electrode layer 116 is a layer of unpatterned film, so it is entirely covered on the substrate 110 (flat layer 114). The common electrode layer 116 is a transparent conductive layer, and the material thereof includes a metal oxide such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, or other suitable oxide. Or a stacked layer of at least two of the above. In addition, the common electrode layer 116 is electrically connected to a common voltage, and thus the common electrode layer 116 may be referred to as a reference electrode. Furthermore, the common electrode layer 116 transmits a common signal, for example, a common potential, but is not limited thereto.

The insulating layer 118 covers the common electrode layer 116. The material of the insulating layer 118 comprises an inorganic material (for example: cerium oxide, cerium nitride, cerium oxynitride, other combinations) Suitable materials, or stacked layers of at least two of the above materials, organic materials (eg,), or other suitable materials, or combinations thereof.

The pixel electrode 120 is formed on the insulating layer 118. According to the present embodiment, the pixel electrode 120 has a branched pattern as shown in FIG. 2B. In more detail, the inside of the pixel electrode 120 has a plurality of elongated openings 120a arranged in parallel to expose the following insulating layer 118. The pixel electrode 120 can be a transparent conductive material including a metal oxide such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, or other suitable oxide. Or a stacked layer of at least two of the above. Further, as shown in FIG. 10B, the pixel electrodes 120 in the respective pixel structures are separated from each other.

The contact structure 124 is located on the insulating layer 118, and the contact structure 124 is electrically connected to the pixel electrode 120 and electrically connected to the active device T of the first substrate 130. In the embodiment of FIGS. 1 and 2A and 2B, the contact structure 124 is formed of an insulating spacer 122 and a pixel electrode 120 covering the insulating spacer 122. Moreover, the contact structure 124 is in electrical contact with the conductive layer 106b on the first substrate 100 to electrically connect the pixel electrode 120 on the second substrate 130 with the active device T on the first substrate 100. Of course, according to other embodiments, if the conductive layer 106b is not disposed on the first substrate 100, the contact structure 124 is directly electrically connected to the active device T on the first substrate 100, so that the pixel electrode on the second substrate 130 is The 120 is electrically connected to the active device T on the first substrate 100.

It is to be noted that, as shown in FIG. 10B, an insulating spacer 122 is disposed in each of the pixel structures of the second substrate, and each of the pixel electrodes 120 covers the corresponding insulating spacer 122 so that On the second substrate Each of the pixel electrodes 120 is electrically connected to the corresponding active device T.

As described above, in the present invention, the pixel electrode 120 is disposed on the second substrate 130, and the active device T is electrically connected to the pixel electrode 120 by using the contact structure 124. Therefore, the driving signal (for example, the pixel potential, but not limited thereto) via the active device T can be transmitted to the pixel electrode 120 on the second substrate 130 through the contact structure 124, thereby controlling the display on the pixel electrode 120. Medium 150. The common electrode layer 116 and the pixel electrode 120 are both disposed on the second substrate 130. Therefore, when the finger touches the display panel (the outer surface of the second substrate 130), the electric field inside the display panel is not changed. Therefore, the present invention does not need to additionally form a light-transmitting conductive layer on the outer surface of the second substrate 130, so that the problem of a decrease in the transmittance of the display panel can be avoided. In addition, since the common electrode layer 116 is disposed on the second substrate 130, the common electrode layer 116 does not have a coupling effect with the scan lines SL and the data lines DL on the first substrate 100, thereby affecting the scan lines SL and the data lines DL. Signal transmission on.

3 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention. Referring to FIG. 3, the embodiment of FIG. 3 is similar to the embodiment of FIG. 1. Therefore, the same components are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment of FIG. 3 differs from the embodiment of FIG. 1 in that the active device T (thin film transistor) on the first substrate 100 has a source S and a drain D material including a metal or a metal oxide. Since the material of the source S and the drain D includes a metal or a metal oxide (for example, indium tin oxide or indium zinc oxide), this embodiment can omit the fabrication of the protective layer, that is, no active components. The protective layer is covered on the T, and the active device T is exposed. And pick up The contact structure 124 is in direct electrical contact with the exposed drain D of the active device T.

4 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention. Referring to FIG. 4, the embodiment of FIG. 4 is similar to the embodiment of FIG. 1 and FIG. 3, and therefore the same components are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment of FIG. 4 is different from the embodiment of FIG. 1 and FIG. 3 in that the first substrate 100 further includes one or more stacked patterns 140 (only one is drawn in the drawing, but is not limited thereto, and may be two Above), and the drain D of the active device T covers the stacked pattern 140, and the stacked pattern 140 is disposed corresponding to the contact structure 124 on the second substrate 130. The stacked pattern 140 may be a single film layer or a multilayer film layer, and the stacked pattern 140 may also be a plurality of patterns having different sizes. Since the stack pattern 140 can pad the drain D of the active device T, the conductive effect between the drain D of the active device T and the contact structure 124 can be increased. In this embodiment, preferably, the potential of the stacked pattern 140 is floating.

In the above several embodiments, the contact structure 124 is composed of the insulating spacer 122 and the pixel electrode 120 covering the insulating spacer 122, but the invention is not limited thereto. According to other embodiments, the contact structure may also be other variations. Referring to FIG. 9A to FIG. 9D , the contact structure 124 illustrated in FIG. 9A is composed of an insulating spacer 122 and a pixel electrode 120 covering the insulating spacer 122 . The contact structure 127 shown in FIG. 9B is composed of an insulating spacer 122 and a conductive material layer 123 covering the insulating spacer 122, wherein the insulating spacer 122 is disposed on the pixel electrode 120, and the conductive material layer 123 covers the insulating spacer 122 and the pixel electrode 120 Electrical connection. Here, the conductive material layer 123 may use the same or different material as the pixel electrode 120. The conductive material layer 123 is preferably made of a metal material based on conductivity considerations, for example, using a scanning line or the same material as the data line. In addition, the contact structure 127 shown in FIG. 9C is composed of an insulating spacer 122 and a conductive material layer 123 covering the insulating spacer 122, wherein the insulating spacer 122 is not directly disposed on the pixel electrode 120 but covered in the insulating gap. The conductive material layer 123 on the surface of the object 122 is electrically connected to the pixel electrode 120. Furthermore, the contact structure shown in FIG. 9D is composed of a simple conductive spacer 121. It is worth mentioning that the contact structure illustrated in FIG. 9B to FIG. 9D can be applied to the display panels of FIGS. 1 , 3 and 4 , that is, the contact structure illustrated in FIGS. 9B to 9D can be used. Instead of the contact structure 124 in Figures 1, 3 and 4.

The display panel of the above embodiments may also be referred to as a Fringe Field Switching (FFS) display panel or an Advanced Fringe Filed Switching (AFFS). In the present invention, the pixel electrode is disposed on the second substrate, and the manner in which the active component and the pixel electrode are electrically connected by using the contact structure can also be applied to an In-Plane Switching (IPS) display panel and a super Super-In Plane Switching (S-IPS) and Advanced Super In-Plane Switching (AS-IPS).

Figure 5 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention. FIG. 6A is a top view of the first substrate of the display panel shown in FIG. 5. FIG. 6B is a top view of the second substrate of the display panel shown in FIG. 5. Please refer to 5, FIG. 6A and FIG. 6B, the embodiment of FIG. 5 (ie, FIGS. 6A and 6B) is similar to the embodiment of FIG. 1 (ie, FIG. 2A and FIG. 2B), and thus the same elements are denoted by the same reference numerals, and The details are not repeated.

Similarly, in order to clearly illustrate the present invention, FIGS. 6A and 6B illustrate only one of the pixel structures in the display panel as an example. It should be understood by those skilled in the art that the display panel is composed of a plurality of arrayed pixel structures (also referred to as pixel arrays). In other words, the pixel array structure on the first substrate of the display panel of this embodiment is, for example, as shown in Fig. 11A, which is composed of a plurality of pixel structures as shown in Fig. 6A. The pixel array structure on the second substrate of the display panel is, for example, as shown in Fig. 11B, which is composed of a plurality of pixel structures as shown in Fig. 6B. The description of FIG. 6A and FIG. 6B is mainly described in detail with a single pixel structure. However, the display panel claimed in the present invention can be understood by referring to FIGS. 11A and 11B at the same time.

The embodiment of FIG. 5 (ie, FIG. 6A and FIG. 6B) differs from the embodiment of FIG. 1 (ie, FIG. 2A and FIG. 2B) in that the second substrate 132 includes a substrate 110, a pixel electrode 126, a common electrode 125, and Contact structure 128. Similarly, according to an embodiment of the present invention, the second substrate 132 may further include a color filter pattern 112a, a light shielding pattern 112b, and a flat layer 114.

In the present embodiment, the pixel electrode 126 and the common electrode 125 have a branched pattern, respectively, and as shown in FIG. 6B, the pixel electrode 126 and the common electrode 125 are alternately arranged with each other. In other words, there is an elongated opening 125a between the pixel electrode 126 and the common electrode 125 to electrically insulate each other. In addition, the common electrode 125 of each pixel structure is electrically connected to the same common Voltage. In addition, the pixel electrode 126 and the common electrode 125 may be transparent conductive materials including metal oxides such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, Or other suitable oxide, or a stacked layer of at least two of the foregoing.

It is worth mentioning that, as shown in Fig. 11B, the pixel electrodes 126 in the respective pixel structures are separated from each other. The common electrodes 125 in the pixel structure of each column may be connected to each other or electrically connected by other means.

Similarly, the contact structure 128 is electrically connected to the pixel electrode 126 and electrically connected to the active device T of the first substrate 100. In the embodiment of FIG. 5, the contact structure 128 is comprised of an insulating spacer 122 and a pixel electrode 126 that covers the insulating spacer 122. Moreover, the contact structure 128 is in electrical contact with the conductive layer 106b on the first substrate 100 to electrically connect the pixel electrode 120 on the second substrate 132 with the active device T on the first substrate 100.

Similarly, as shown in FIG. 11B, an insulating spacer 122 is disposed in each of the pixel structures of the second substrate, and each of the pixel electrodes 126 covers the corresponding insulating spacer 122 to make the second substrate. Each of the pixel electrodes 126 is electrically connected to the corresponding active device T.

Moreover, the conductive layer 106b can be selectively electrically connected to the conductive layer 106a. In the present embodiment, the conductive layer 106b is not electrically connected to the conductive layer 106a as an example, but is not limited thereto. Of course, if the conductive layer 106b is not disposed on the first substrate 100, the contact structure 128 is directly electrically connected to the active device T on the first substrate 100, so that the pixel on the second substrate 132 is electrically charged. The pole 126 is electrically connected to the active device T on the first substrate 100.

As described above, in the present invention, the pixel electrode 126 is disposed on the second substrate 132, and the active device T is electrically connected to the pixel electrode 126 by the contact structure 128. Therefore, the driving signal (for example, the pixel potential, but not limited thereto) via the active device T can be transmitted to the pixel electrode 126 on the second substrate 132 through the contact structure 128, thereby controlling the display on the pixel electrode 126. Medium 150. The common electrode 125 and the pixel electrode 126 are both disposed on the second substrate 132. Therefore, when the finger touches the display panel (the outer surface of the second substrate 132), the electric field inside the display panel is not changed. Therefore, the present invention does not need to additionally form a light-transmitting conductive layer on the outer surface of the second substrate 132, so that the problem of a decrease in the transmittance of the display panel can be avoided. In addition, since the common electrode 125 is disposed on the second substrate 132, the common electrode 125 does not have a coupling effect with the scan line SL and the data line DL on the first substrate 100, and affects the signals on the scan line SL and the data line DL. transfer.

Figure 7 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention. Referring to FIG. 7, the embodiment of FIG. 7 is similar to the embodiment of FIG. 5, and therefore the same components are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment of FIG. 7 differs from the embodiment of FIG. 5 in that the active device T (thin film transistor) on the first substrate 100 has a source S and a drain D material including a metal or a metal oxide. Since the source S and the drain D are made of an anti-oxidation metal or a metal oxide (for example, indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, or the like). a suitable oxide, or a stacked layer of at least two of the above, The embodiment can omit the fabrication of the protective layer, that is, the active device T is no longer exposed on the active device T, and the active device T is exposed. The contact structure 128 is directly electrically connected to the drain D of the exposed active device T.

Figure 8 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention. Referring to FIG. 8, the embodiment of FIG. 8 is similar to the embodiment of FIG. 5, and therefore the same components are denoted by the same reference numerals and the description thereof will not be repeated. The embodiment of FIG. 8 is different from the embodiment of FIG. 5 in that the first substrate 100 further includes one or more stacked patterns 140 (only one is drawn in the drawing), and the drain D of the active device T covers the stack. The pattern 140 and the stacked pattern 140 are disposed corresponding to the contact structure 124 on the second substrate 130. The stacked pattern 140 may be a single film layer or a multilayer film layer, and the stacked pattern 140 may also be a plurality of patterns having different sizes. The stacked pattern 140 can increase the conductive effect between the drain D of the active device T and the contact structure 128 by padding the drain D of the active device T.

Similarly, in the above several embodiments, the contact structure 128 is composed of the insulating spacer 122 and the pixel electrode 126 covering the insulating spacer 122, but the invention is not limited thereto. According to other embodiments, as shown in FIG. 9B, the contact structure 127 may be composed of an insulating spacer 122 and a conductive material layer 123 covering the insulating spacer 122, wherein the insulating spacer 122 is disposed on the pixel electrode 120, and The conductive material layer 123 covers the insulating spacer 122 and is electrically connected to the pixel electrode 120. Here, the conductive material layer 123 may use the same or different material as the pixel electrode 120. The conductive material layer 123 is preferably made of a metal material based on conductivity considerations, for example, using a scanning line or the same material as the data line. In addition, as shown As shown in FIG. 9C, the contact structure 127 is composed of an insulating spacer 122 and a conductive material layer 123 covering the insulating spacer 122, wherein the insulating spacer 122 is not directly disposed on the pixel electrode 120 but covers the surface of the insulating spacer 122. The conductive material layer 123 is electrically connected to the pixel electrode 120. Further, as shown in FIG. 9D, the contact structure may be composed of a simple conductive spacer 121. The contact structure of FIGS. 9B to 9D described above can be applied to the display panels of FIGS. 5, 7, and 8.

Furthermore, in at least one of the above embodiments (eg, FIG. 1, FIG. 3, FIG. 4, FIG. 5, FIG. 7, FIG. 8), the color filter pattern 112a is preferably disposed on the substrate 110. Examples, but not limited to this. In the first modified embodiment, the color filter pattern 112a is selectively disposed on the substrate 101. The color filter pattern 112a may be selectively located on the active device T. The color filter pattern 112a may be located on the active layer (COA) or the color filter pattern 112a may be selectively located on the active device T. The color filter pattern 112a may be referred to as an array on color filter (AOC).

In addition, in at least one of the above embodiments of the present invention (for example, FIG. 1, FIG. 3, FIG. 4, FIG. 5, FIG. 7, FIG. 8), the light-shielding pattern 112b is preferably disposed on the substrate 110, but Not limited to this. In the second modified embodiment, the light-shielding pattern 112b is selectively disposed on the substrate 101, that is, the light-shielding pattern 112b is disposed on the active device T, and the black matrix is located on the active layer (black matrix on array, BOA).

Further, in addition to the design of the above two modified embodiments, in the third modification, when the light blocking pattern 112b is provided together with the color filter 112a When over the substrate 101, the planar layer 114 on the substrate 110 can be selectively removed. At this time, the common electrode 116 is directly formed on the substrate 110.

In summary, the present invention places the pixel electrode and the common electrode layer (common electrode) in the display panel on the second substrate. When the finger touches the display panel, it does not cause an electric field change inside the display panel. Therefore, the present invention does not need to additionally form a light-transmitting conductive layer on the outer surface of the second substrate, so that the decrease in the transmittance of the display panel can be avoided.

In addition, since the common electrode layer (common electrode) in the display panel is disposed on the second substrate, the common electrode layer (common electrode) does not have a coupling effect with the scan line and the data line on the first substrate, thereby affecting the scanning. Signal transmission on the line and data line. In this way, the load of the common electrode layer (common electrode) can also be reduced.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧First substrate

101,110‧‧‧Substrate

102‧‧‧Insulation

104‧‧‧Protective layer

106a, 106b‧‧‧ conductive layer

112a‧‧‧Color filter pattern

112b‧‧‧ shading pattern

114‧‧‧flat layer

116‧‧‧Common electrode layer

118‧‧‧Insulation

120, 126‧‧‧ pixel electrodes

120a, 125a‧‧‧ elongated opening

121‧‧‧ Conductive spacers

122‧‧‧Insulation spacers

123‧‧‧ Conductive material layer

124, 127, 128‧‧‧ contact structure

125‧‧‧Common electrode

130‧‧‧second substrate

140‧‧‧Stack pattern

150‧‧‧Display media

T‧‧‧ active components

G‧‧‧ gate

C‧‧‧ channel

S‧‧‧ source

D‧‧‧汲

SL‧‧‧ scan line

DL‧‧‧ data line

1 is a schematic cross-sectional view of a display panel in accordance with an embodiment of the present invention.

2A is a top view of the first substrate of the display panel shown in FIG. 1.

2B is a top view of the second substrate of the display panel shown in FIG. 1.

3 and 4 are schematic cross-sectional views of a display panel in accordance with other embodiments of the present invention.

Figure 5 is a cross-sectional view of a display panel in accordance with another embodiment of the present invention.

FIG. 6A is a top view of the first substrate of the display panel shown in FIG. 5. FIG.

6B is a top view of the second substrate of the display panel shown in FIG. 5.

7 and 8 are schematic cross-sectional views of a display panel in accordance with other embodiments of the present invention.

9A-9D are schematic views of a contact structure in accordance with an embodiment of the present invention.

10A is a top view of a pixel array of a first substrate of the display panel shown in FIG. 1.

10B is a top view of a pixel array of the second substrate of the display panel shown in FIG. 1.

11A is a top view of a pixel array of a first substrate of the display panel shown in FIG. 5.

11B is a top view of a pixel array of the second substrate of the display panel shown in FIG. 5.

100‧‧‧First substrate

101, 110‧‧‧ substrate

102‧‧‧Insulation

104‧‧‧Protective layer

106a, 106b‧‧‧ conductive layer

112a‧‧‧Color filter pattern

112b‧‧‧ shading pattern

114‧‧‧flat layer

116‧‧‧Common electrode layer

118‧‧‧Insulation

120‧‧‧pixel electrodes

122‧‧‧Insulation spacers

124‧‧‧Contact structure

130‧‧‧second substrate

150‧‧‧Display media

T‧‧‧ active components

G‧‧‧ gate

C‧‧‧ channel

S‧‧‧ source

D‧‧‧汲

Claims (22)

A display panel includes: a first substrate, the first substrate includes: a scan line and a data line; an active component electrically connected to the scan line and the data line; and a second substrate located at the first Opposite to a substrate, wherein the second substrate comprises: a common electrode layer; an insulating layer covering the common electrode layer; a pixel electrode on the insulating layer; and a contact structure on the insulating layer, wherein The contact structure is electrically connected to the pixel electrode and electrically connected to the active device on the first substrate; and a display medium is located between the first substrate and the second substrate, wherein the display medium and the display medium No common electrode layer is disposed between the first substrates. The display panel of claim 1, wherein the contact structure is formed by an insulating spacer and the pixel electrode covering the insulating spacer. The display panel of claim 1, wherein the contact structure is composed of an insulating spacer and a conductive material layer covering the insulating spacer, and the conductive material layer and the pixel electrode are electrically connected. connection. The display panel of claim 1, wherein the contact structure is a conductive spacer. The display panel of claim 1, wherein the The substrate further comprises: a protective layer covering the active component; and a conductive layer on the protective layer above the active component. The display panel of claim 5, wherein the conductive layer is electrically connected to the active component, and the contact structure is in electrical contact with the conductive layer. The display panel of claim 5, wherein the conductive layer is made of a metal or a metal oxide. The display panel of claim 1, wherein the first substrate further comprises one or more stacked patterns, the active component covers the stacked pattern, and the stacked pattern corresponds to the contact structure on the second substrate Settings. The display panel of claim 1, wherein the second substrate further comprises: a color filter array; and a flat layer covering the color filter array, wherein the common electrode layer is located on the flat layer. The display panel of claim 1, wherein the active device is a thin film transistor having a gate, a source and a drain, and the source and the drain are made of metal or Metal oxide. The display panel of claim 1, wherein the pixel electrode has a branched pattern. A display panel includes: a first substrate, the first substrate comprising: a scan line and a data line; an active component electrically connected to the scan line and the data line; a second substrate located opposite the first substrate, wherein the second substrate comprises: a pixel electrode a contact structure electrically connected to the pixel electrode and electrically connected to an active device on the first substrate; a common electrode interlaced with the pixel electrode; and a display medium located at the first Between a substrate and the second substrate. The display panel of claim 12, wherein the contact structure is composed of an insulating spacer and the pixel electrode covering the insulating spacer. The display panel of claim 12, wherein the contact structure is composed of an insulating spacer and a conductive material layer covering the insulating spacer, and the conductive material layer and the pixel electrode are electrically connected. connection. The display panel of claim 12, wherein the contact structure is a conductive spacer. The display panel of claim 12, wherein the first substrate further comprises: a protective layer covering the active component; and a conductive layer on the protective layer above the active component. The display panel of claim 16, wherein the conductive layer is electrically connected to the active device, and the contact structure and the conductive layer Electrical contact. The display panel of claim 16, wherein the conductive layer is made of a metal or a metal oxide. The display panel of claim 12, wherein the first substrate further comprises one or more stacked patterns, the active component covers the stacked pattern, and the stacked pattern corresponds to the contact structure on the second substrate Settings. The display panel of claim 12, wherein the second substrate further comprises: a color filter array; a flat layer covering the color filter array, wherein the pixel electrode and the common electrode are located at the flat On the floor. The display panel of claim 12, wherein the active component is a thin film transistor having a gate, a source and a drain, and the source and the drain are made of metal or Metal oxide. The display panel of claim 12, wherein the pixel electrode and the common electrode respectively have a branched pattern.